Family name יאו (Yau 
, Yao 
, Yaw ) , globally, is a prevalent surname. The last name יאו is habitual in Hong Kong, where it is a common surname, Ivory Coast, and Cayman Islands (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in China, Nigeria, and Ivory Coast. Much less frequently, יאו is the forename as well as the last name.